Foreman lift 250 KG box to a height of 1 m and holding without eluding or lowering how much work is done by the man lifting a box how much work do you do you do in just holding where do they get tired away with this
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M=250
f=mg
=250×10
=2500
S=1m
W=fs
=2500×1
2500j
f=mg
=250×10
=2500
S=1m
W=fs
=2500×1
2500j
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